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Behavioral Ecology and Sociobiology

, Volume 26, Issue 3, pp 209–216 | Cite as

Experimental manipulation of the dawn and dusk chorus in the blackbird Turdus merula

  • Innes C. Cuthill
  • William A. Macdonald
Article

Summary

We present experimental and correlational data that demonstrate that both the nutritional state of the male and his mate's fertility affect the timing and intensity of dawn and dusk song in the blackbird (Turdus merula). Food supplementation leads to paired males singing earlier, for longer, and at higher peak rate at both dusk and dawn succeeding the treatment. We argue that the timing, not just the intensity, of song conveys information about the male's phenotypic condition. Both dawn and dusk song start earlier and have longer duration as a male's mate reaches peak fertility indicating that, in agreement with literature on the great tit (Parus major), song at this time has particular significance in mate guarding for paired males of monogamous species. We discuss the relative importance of these factors as functional explanations for the dawn chorus.

Keywords

Nutritional State High Peak Experimental Manipulation Food Supplementation Correlational Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • Innes C. Cuthill
  • William A. Macdonald
    • 1
  1. 1.Edward Grey Institute of Field OrnithologyDepartment of ZoologySouth Parks RoadUK

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